左捆分支区块的逆行导向:从左捆分支节奏的洞察力
Shunmuga Sundaram Ponnusamy1, William Basil2, Vithiya Ganesan3
1Department of Cardiology, Velammal Medical College, Madurai, India.
JACC. Clinical electrophysiology
|June 15, 2024
概括
对心力衰竭 (HF) 的左捆分支节奏 (LBBP) 与左捆分支阻断 (LBBB) 显示,双向阻断与更糟糕的结果有关,而单向阻断预测了更好的结果和更好的喷射率.
科学领域:
- 心脏病学 心脏病学
- 电子生理学 电子生理学
- 心脏衰竭管理的管理
背景情况:
- 双心室节奏是心力衰竭 (HF),左捆支部阻塞 (LBBB) 和左心室 (LV) 功能障碍的标准.
- 左捆枝节奏 (LBBP) 为传统的双心室节奏提供了替代方案.
研究的目的:
- 在LBBP期间评估左束分支的逆行导电特性.
- 确定这些导电性质在患有非缺血性心肌病和LBBB的患者中的临床影响.
主要方法:
- 包括患有非缺血性心肌病,LBBB和LV喷射分数 (LVEF) ≤35%的接受LBBP的患者.
- 使用His记录潜力评估逆向导电,定义单向和双向块.
- 监测HF住院,心室节律失常和死亡率.
主要成果:
- 双向阻塞发生在82%的患者身上,与晚期HF和更广泛的QRS有关.
- 单向阻塞发生在18%,与更窄的QRS节奏和更高的LVEF相关.
- 单向阻断预测了明显更好的LVEF正常化 (OR 4.1) 和较少的不良事件 (0% vs 12.5%).
结论:
- 在LBBB中双向阻塞与更严重的HF症状相关.
- 在LBBP期间单向阻断与优越的临床结果和改善的心脏功能有关.
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